Find the t-value such that the area in the right tail is 0.2 with 5 degrees of freedom.
1 answer:
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Answer:
y - 4 = (2/3)(x - 7)
Step-by-step explanation:
(see attached for reference)
we are given slope, m = 2/3 and point (x₁, y₁) is (7,4)
y - y₁ = m(x - x₁)
substituting the given values into the general equation
y - y₁ = m(x - x₁)
y - 4 = (2/3)(x - 7)
<h3>Answer: 20</h3>
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Explanation:
It might help to rotate the figure so the parallel sides are horizontal. This is optional.
The parallel bases are and
in either order.
The height is h = 4 which is always perpendicular to both bases.
Plug these values into the trapezoid area formula.
The area of the trapezoid is 20 square units.
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Another pathway is to break the trapezoid into a rectangle up top and a triangle down below.
The rectangle is 4 by 4 with area 4*4 = 16
The triangle has a base of 6-4 = 2 and height of 4, so its area is base*height/2 = 2*4/2 = 8/2 = 4
Overall the total area is rectangle+triangle = 16+4 = 20 square units.